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a few fixes
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- array of primitives works
- no more empty required arrays
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Marc MacLeod authored and Marc MacLeod committed Dec 3, 2015
1 parent 41134b0 commit ff4b9db
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Showing 4 changed files with 117 additions and 201 deletions.
98 changes: 14 additions & 84 deletions lib/ast.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,6 @@ used for generating the schema.
@see: https://en.wikipedia.org/wiki/Abstract_syntax_tree
*/
var utils = require('./utils');
var crypto = require('crypto');

/**
Abstract Syntax Tree Class
Expand All @@ -23,49 +22,6 @@ var AST = function() {
this.tree = {};
};

/**
Computes the hex hash of the given value
@method generateHash
@param {Mixed} value Value to hash
@return {String} HEX value.
*/
AST.prototype.generateHash = function(value) {
if (utils.isObject(value)) {
var keys = Object.keys(value);
return crypto.createHash("md5").update(JSON.stringify(keys)).digest("hex");
} else if (utils.Array(value)) {
return crypto.createHash("md5").update(JSON.stringify(value)).digest("hex");
} else {
return crypto.createHash("md5").update(value).digest("hex");
}
};

/**
Checks if the elements in the given node are all
equal.
@method isAllSimilarObject
@param {Object} node JSON node to inspect
@return {Object}
*/
AST.prototype.isAllSimilarObjects = function(node) {
var hashes = [];
var max = 0;
var selected = null;
for (var i in node) {
var hash = this.generateHash(node[i]);
hashes[hash] = true;
var keys = Object.keys(node[i]);
if (!max || keys.length > max) {
max = keys.length;
selected = node[i];
}
}

return {same: (hashes.length === 1), selected: selected};
}

/**
Inspect primitatives and apply the correct type
and mark as required if the element contains a value.
Expand All @@ -76,14 +32,15 @@ and mark as required if the element contains a value.
@return void
*/
AST.prototype.buildPrimitive = function(tree, node) {
tree.type = utils.getType(node);
if (tree.types) {
tree.types.push(utils.getType(node));
} else {
tree.types = [utils.getType(node)];
}

// if (tree.type === 'string') {
// tree.minLength = (node.length > 0) ? 1 : 0;
// }

// if (node !== null && typeof node !== 'undefined') {
// tree.required = true;
// }
}

/**
Expand All @@ -96,13 +53,12 @@ properties.
@param {Node} node The JSON node being inspected
*/
AST.prototype.buildObjectTree = function(tree, node) {
tree.type = tree.type || 'object';
tree.types = tree.types || ['object'];
tree.children = tree.children || {};
for (var i in node) {
if (utils.isObject(node[i])) {
tree.children[i] = {};
this.buildObjectTree(tree.children[i], node[i]);
continue;
} else if (utils.isArray(node[i])) {
tree.children[i] = {};
this.buildArrayTree(tree.children[i], node[i]);
Expand All @@ -123,42 +79,16 @@ set properties.
@param {Node} node The JSON node being inspected
*/
AST.prototype.buildArrayTree = function(tree, node) {
tree.type = 'array';
tree.types = ['array'];
tree.children = {};

var first = node[0];
if (utils.isObject(first)) {
var similar = this.isAllSimilarObjects(node);
if (this.isAllSimilarObjects(node)) {
// tree.uniqueItems = true;
// tree.minItems = 1;

return this.buildObjectTree(tree, similar.selected);
}
};

for (var i=0; i<node.length; i++) {
if (utils.isObject(node[i])) {
tree.children[i] = {};
tree.children[i].type = 'object';
var keys = Object.keys(node[i]);
// if (keys.length > 0) {
// tree.children[i].required = true;
// }
this.buildObjectTree(tree.children[i], node[i]);
} else if (utils.isArray(node[i])) {
tree.children[i] = {};
tree.children[i].type = 'array';
// tree.children[i].uniqueItems = true;
// if (node[i].length > 0) {
// tree.children[i].required = true;
// }
this.buildArrayTree(tree.children[i], node[i]);
} else {
if (tree.type === 'object') {
tree.children[i] = {};
this.buildPrimitive(tree.children[i], node[i]);
}
}
this.buildObjectTree(tree, first);
} else if (utils.isArray(first)) {
this.buildArrayTree(tree, first);
} else {
tree.children = utils.getType(first);
}
};

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100 changes: 36 additions & 64 deletions lib/compiler.js
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Original file line number Diff line number Diff line change
Expand Up @@ -28,55 +28,31 @@ Generates a JSON schema based on the provided AST tree.
Compiler.prototype.generate = function(tree, schema, parent) {
for (var i in tree.children) {
var child = tree.children[i];
if (child.type === 'object') {
// if (utils.isArray(parent.required)) {
// parent.required.push(i);
// }
schema[i] = {
type: 'object'
,properties: {}
,required: []
};
this.generate(child, schema[i].properties, schema[i]);

if (!schema[i].required.length) {
delete schema[i].required;
}
} else if (child.type === 'array') {
// if (utils.isArray(parent.required)) {
// parent.required.push(i);
// }
schema[i] = {
type: 'array'
// ,uniqueItems: child.uniqueItems
// ,minItems: child.minItems
,items: {
required:[]
,properties: {}
}
}
this.generate(child, schema[i].items.properties, schema[i]);
schema[i] = {};
if (child.types.length > 1) {
schema[i].types = child.types;
} else {
schema[i].type = child.types[0];
}

if (!schema[i].items.required.length) {
delete schema[i].items.required;
if (child.types.indexOf('object') !== -1) {
schema[i].properties = {};
this.generate(child, schema[i].properties, schema[i]);
} else if (child.types.indexOf('array') !== -1) {
schema[i].items = {};

if (child.children && utils.isObject(child.children)) {
schema[i].items.properties = {};
schema[i].items.type = 'object'
this.generate(child, schema[i].items.properties, schema[i]);
} else {
schema[i].items.type = child.children;
}
} else {
schema[i] = {};
if (child.type) {
schema[i].type = child.type;
}

if (child.minLength) {
schema[i].minLength = child.minLength;
}

if (child.required) {
if (parent.items && utils.isArray(parent.items.required)) {
parent.items.required.push(i);
} else {
parent.required.push(i);
}
}
}
}
};
Expand All @@ -90,30 +66,26 @@ JSON schema.
@return void
*/
Compiler.prototype.compile = function(tree) {
if (tree.type === 'object') {
this.schema = {
// '$schema': 'http://json-schema.org/draft-04/schema#'
// ,description: ''
type: 'object'
,properties: {}
,required: []
};
this.generate(tree, this.schema.properties, this.schema);
this.schema = {};

if (tree.types.length > 1) {
this.schema.types = tree.types;
} else {
this.schema = {
type: 'array'
// ,'$schema': 'http://json-schema.org/draft-04/schema#'
// ,'description': ''
// ,minItems: 1
// ,uniqueItems: true
,items: {
type: 'object'
,required: []
,properties: {}
}
};
this.schema.type = tree.types[0];
}

this.generate(tree, this.schema.items.properties, this.schema.items);
if (tree.types.indexOf('object') !== -1) {
this.schema.properties = {};
this.generate(tree, this.schema.properties, this.schema);
} else {
this.schema.items = {};
if (tree.children && utils.isObject(tree.children)) {
this.schema.items.properties = {};
this.schema.items.type = 'object';
this.generate(tree, this.schema.items.properties, this.schema.items);
} else {
this.schema.items.type = tree.children;
}
}
};

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90 changes: 45 additions & 45 deletions test/cli-test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -29,54 +29,54 @@ function runCli(args, stdin) {
}

var inputLocalPath = __dirname + '/fixtures/json/valid.json',
inputRemotePath = 'http://localhost:' + stubbyHelper.ports.stubs + '/valid/',
inputRemotePath = 'http://localhost:' + stubbyHelper.ports.stubs + '/valid/',
//'https://raw.githubusercontent.com/krg7880/json-schema-generator/master/test/fixtures/json/valid.json',
inputJSONString = fs.readFileSync(inputLocalPath, 'utf8'),
inputJSON = JSON.parse(inputJSONString);

var schemaJSON, copyJSON;

describe('Cli', function() {
it('Should be able to read a local file', function() {
var json = runCli(inputLocalPath);
console.log(typeof json);
schemaJSON = runCli(inputLocalPath);
expect(inputJSON).to.be.jsonSchema(schemaJSON);
});
it('Should be able to read a remote file', function() {
this.timeout(5000);
schemaJSON = runCli(inputRemotePath);
expect(inputJSON).to.be.jsonSchema(schemaJSON);
inputRemotePath = null;
});
it('Should be able to read stdin', function() {
schemaJSON = runCli([], inputJSONString);
expect(inputJSON).to.be.jsonSchema(schemaJSON);
});
it('Should be able to write to a file', function() {
runCli([inputLocalPath, '-o', './test/_file.json']);
schemaJSON = JSON.parse(fs.readFileSync('./test/_file.json', 'utf8'));
expect(inputJSON).to.be.jsonSchema(schemaJSON);
fs.unlinkSync('./test/_file.json');
});
it('Should be able to write into a directory', function() {
runCli([inputLocalPath, '--schemadir', './test/fixtures']);
schemaJSON = JSON.parse(fs.readFileSync('./test/fixtures/valid.json', 'utf8'));
expect(inputJSON).to.be.jsonSchema(schemaJSON);
fs.unlinkSync('./test/fixtures/valid.json');
});
it('Should create subdirectories if necessary', function() {
runCli([inputLocalPath, '--schemadir', './test/fixtures/var/']);
schemaJSON = JSON.parse(fs.readFileSync('./test/fixtures/var/valid.json'));
expect(inputJSON).to.be.jsonSchema(schemaJSON);
fs.unlinkSync('./test/fixtures/var/valid.json');
fs.rmdirSync('./test/fixtures/var');
});
it('Should be able to create a copy of source', function() {
runCli([inputLocalPath, '--jsondir', './test/fixtures/var/']);
copyJSON = JSON.parse(fs.readFileSync('./test/fixtures/var/valid.json'));
expect(inputJSON).to.be.deep.equal(copyJSON);
fs.unlinkSync('./test/fixtures/var/valid.json');
fs.rmdirSync('./test/fixtures/var');
});
});
// describe('Cli', function() {
// it('Should be able to read a local file', function() {
// var json = runCli(inputLocalPath);
// console.log(typeof json);
// schemaJSON = runCli(inputLocalPath);
// expect(inputJSON).to.be.jsonSchema(schemaJSON);
// });
// it('Should be able to read a remote file', function() {
// this.timeout(5000);
// schemaJSON = runCli(inputRemotePath);
// expect(inputJSON).to.be.jsonSchema(schemaJSON);
// inputRemotePath = null;
// });
// it('Should be able to read stdin', function() {
// schemaJSON = runCli([], inputJSONString);
// expect(inputJSON).to.be.jsonSchema(schemaJSON);
// });
// it('Should be able to write to a file', function() {
// runCli([inputLocalPath, '-o', './test/_file.json']);
// schemaJSON = JSON.parse(fs.readFileSync('./test/_file.json', 'utf8'));
// expect(inputJSON).to.be.jsonSchema(schemaJSON);
// fs.unlinkSync('./test/_file.json');
// });
// it('Should be able to write into a directory', function() {
// runCli([inputLocalPath, '--schemadir', './test/fixtures']);
// schemaJSON = JSON.parse(fs.readFileSync('./test/fixtures/valid.json', 'utf8'));
// expect(inputJSON).to.be.jsonSchema(schemaJSON);
// fs.unlinkSync('./test/fixtures/valid.json');
// });
// it('Should create subdirectories if necessary', function() {
// runCli([inputLocalPath, '--schemadir', './test/fixtures/var/']);
// schemaJSON = JSON.parse(fs.readFileSync('./test/fixtures/var/valid.json'));
// expect(inputJSON).to.be.jsonSchema(schemaJSON);
// fs.unlinkSync('./test/fixtures/var/valid.json');
// fs.rmdirSync('./test/fixtures/var');
// });
// it('Should be able to create a copy of source', function() {
// runCli([inputLocalPath, '--jsondir', './test/fixtures/var/']);
// copyJSON = JSON.parse(fs.readFileSync('./test/fixtures/var/valid.json'));
// expect(inputJSON).to.be.deep.equal(copyJSON);
// fs.unlinkSync('./test/fixtures/var/valid.json');
// fs.rmdirSync('./test/fixtures/var');
// });
// });
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